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| 型号： | uPSD3212C |
| 厂商： | 意法半导体 |
| 英文描述： | Flash Programmable System Devices with 8032 Microcontroller Core and 16Kbit SRAM(带8032微控制器内核和16Kbit SRAM的FLASH可编程系统器件) |
| 中文描述： | 闪存可编程系统设备与8032微控制器内核和16Kbit的SRAM（带8032微控制器内核和16Kbit SRAM的的闪存可编程系统器件） |
| 文件页数： | 116/151页 |
| 文件大小： | 1194K |
| 代理商： | UPSD3212C |
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uPSD3212C, uPSD3212CV
116/151
RESET TIMING AND DEVICE STATUS AT RESET
Upon Power-up, the PSD MODULE requires a Re-
set (RESET) pulse of duration t
NLNH-PO
after V
CC
is steady. During this period, the device loads in-
ternal configurations, clears some of the registers
and sets the Flash memory into operating mode.
After the rising edge of Reset (RESET), the PSD
MODULE remains in the Reset Mode for an addi-
tional period, t
OPR
, before the first memory access
is allowed.
The Flash memory is reset to the READ Mode
upon Power-up. Sector Select (FS0-FS3 and
CSBOOT0-CSBOOT1) must all be Low, WRITE
Strobe (WR, CNTL0) High, during Power-on
RESET for maximum security of the data contents
and to remove the possibility of a byte being writ-
ten on the first edge of WRITE Strobe (WR). Any
Flash memory WRITE cycle initiation is prevented
automatically when V
CC
is below V
LKO
.
Warm RESET
Once the device is up and running, the PSD MOD-
ULE can be reset with a pulse of a much shorter
duration, t
NLNH
. The same t
OPR
period is needed
before the device is operational after a Warm
RESET. Figure 60 shows the timing of the Power-
up and Warm RESET.
I/O Pin, Register and PLD Status at RESET
Table 82 shows the I/O pin, register and PLD sta-
tus during Power-on RESET, Warm RESET, and
Power-down Mode. PLD outputs are always valid
during Warm RESET, and they are valid in Power-
on RESET once the internal Configuration bits are
loaded. This loading is completed typically long
before the V
CC
ramps up to operating level. Once
the PLD is active, the state of the outputs are de-
termined by the PLD equations.
Figure 60. Reset (RESET) Timing
Table 82. Status During Power-on RESET, Warm RESET and Power-down Mode
Note: 1. The SR_cod and PeriphMode Bits in the VM Register are always cleared to '0' on Power-on RESET or Warm RESET.
Port Configuration
Power-on RESET
Warm RESET
Power-down Mode
MCU I/O
Input mode
Input mode
Unchanged
PLD Output
Valid after internal PSD
configuration bits are
loaded
Valid
Depends on inputs to PLD
(addresses are blocked in
PD Mode)
Address Out
Tri-stated
Tri-stated
Not defined
Peripheral I/O
Tri-stated
Tri-stated
Tri-stated
Register
Power-on RESET
Warm RESET
Power-down Mode
PMMR0 and PMMR2
Cleared to '0'
Unchanged
Unchanged
Macrocells flip-flop status
Cleared to '0' by internal
Power-on RESET
Depends on .re and .pr
equations
Depends on .re and .pr
equations
VM Register
(1)
Initialized, based on the
selection in PSDsoft
Configuration menu
Initialized, based on the
selection in PSDsoft
Configuration menu
Unchanged
All other registers
Cleared to '0'
Cleared to '0'
Unchanged
tNLNH-PO
Power-On Reset
tOPR
AI07437
RESET
tNLNH
Warm Reset
tOPR
V
CC
V
CC
(min)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| UPSD3212C-24T1T | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Flash Programmable System Devices with 8032 Microcontroller Core and 16Kbit SRAM |
| UPSD3212C-24T6T | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Flash Programmable System Devices with 8032 MCU with USB and Programmable Logic |
| UPSD3212C-24U1T | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Flash Programmable System Devices with 8032 Microcontroller Core and 16Kbit SRAM |
| UPSD3212C-24U6T | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Flash Programmable System Devices with 8032 MCU with USB and Programmable Logic |
| UPSD3212C-40T1T | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Flash Programmable System Devices with 8032 Microcontroller Core and 16Kbit SRAM |
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